Owners Manual
Table Of Contents
- Dell Precision 7820 Tower Owner's Manual
- Chassis
- Working on your computer
- Removing and installing components
- Screw size list
- Recommended tools
- Power supply unit (PSU)
- Side cover
- Front bezel
- Hard Disk Drive bezel
- Hard disk drive assembly
- NVMe Flexbay
- Slim Optical Disk Drive
- Front input and output bezel
- 5.25 inch ODD bracket
- Front input and output panel
- Input and output panel bracket
- VROC module
- Intrusion switch
- Internal chassis speaker
- Air shroud
- Memory
- Graphical processing unit(GPU)
- Coin cell battery
- System fan
- Fan bracket
- PCIe holder
- Rear system fan
- Front system fan
- Processor heat sink module
- System board
- Technology and components
- System specifications
- System Setup
- Software
- Troubleshooting
- Contacting Dell
Table 1. Screw list (continued)
Component Screw type Quantity
HDD Bracket M3X5.0mm 1
5.25" ODD Bracket
#6-32 UNC X6.0mm
M3X5.0mm
2
2
System Board #6-32X1/4 inches 11
Middle Fan Fixed Bracket #6-32X1/4 inches 1
Middle Fan Bracket #6-32X1/4 inches 3
Rear Fan Bracket #6-32X1/4 inches 2
HSBP Board M3X5.0mm 2
Slim ODD Fixed Bracket M2X2.0mm 2
Slim ODD M3X5.0mm 1
5.25" ODD M3X4.5mm 4
3.5" HDD Bracket M3X4.5mm 4
2.5" HDD Bracket M3X4.5mm 4
2nd CPU Support Bracket #6-32X1/4 inches 2
2nd CPU Board #6-32X1/4 inches 5
UPI Fixed Bracket M3X5.0mm 1
CPU Cooler T-30 torx bolt 4
Liquid Cooler Module
#6-32X1/4 inches
#6-32 UNC X3.5mm
T-30 torx bolt
4
6
4
Recommended tools
The procedures in this document may require the following tools:
● Phillips #0 screwdriver
● Phillips #1 screwdriver
● Philips #2 screwdriver
● Plastic scribe-Recommended for field technician
● T-30 torx screwdriver
Power supply unit (PSU)
Removing the PSU
1. Follow the procedure in Before working inside your computer.
2. Disconnect the power cable from the system.
3. Press the PSU release latch [1] and slide the power supply away from the system [2].
16
Removing and installing components